Malicious PDF — malware analysis report

Static analysis result for SHA-256 064433cc4d770af8…

MALICIOUS

PDF

45.9 KB Created: 2020-08-31 20:06:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cecb9e3c50f7be39015241a651d5b125 SHA-1: d084aae99c1b407f405660359798295c07240108 SHA-256: 064433cc4d770af8b8be84f1e3b44cfc74d3cfc9d41fa34bd3affde476ee0e5e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a heuristic firing for an advance-fee scam lure, indicating a fraudulent intent. It also includes a link to known malicious redirector infrastructure, which is likely used to deliver a secondary payload or lead the user to a phishing site. The document body, though heavily obfuscated, contains a URL that aligns with the scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wix?keyword=compassion+australia+annual+report
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/93035709713.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/69766614433.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdf
    • https://cdn.shopify.com/s/files/1/0437/9901/9682/files/kumojasaguda.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/zuvomimen.pdf
    • https://cdn.shopify.com/s/files/1/0447/7711/1701/files/adjusted_odds_ratio_logistic_regression.pdf
    • https://cdn.shopify.com/s/files/1/0448/2914/7293/files/premedicacion_de_anfotericina_b.pdf
    • https://static.usrfiles.com/ugd/1e32c2_70b82d3ce08d4d5180a4d12ea6c2f643.pdf
    • https://static.usrfiles.com/ugd/b8c837_072b4975e4c64ac4a3ebded16938a1e0.pdf
    • https://static.usrfiles.com/ugd/88a84f_a74e994e6e864d88846eb31d49dfb3f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_50ade0f8fe3248478fa39ed689e70985.pdf
    • https://static.usrfiles.com/ugd/6f53d7_e175005108f34ab882e30c4c6cbc812e.pdf
    • https://static.usrfiles.com/ugd/80c1db_12810f87dc5346cc956aeacf44269bf8.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075d1.bin
2a6003b0750e0b7ac85d9f8e0f2ad2246564d1cea160ebfd01bd4eec69085ff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D1 4868 bytes
font_01_sfnt_off00008639.bin
3f66198407b8cd929ca7586ff5d149bb6dbc4980aec513be40871d12ae2c60e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8639 10644 bytes

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